You're looking for a guide on how to use a trainer for Red Alert 2: Yuri's Revenge, specifically version 1001.11. I'll provide a general guide on using trainers and some specific notes on Red Alert 2: Yuri's Revenge.

  1. The "Game.dat" problem: The EA Origin version renamed the executable. The trainer is looking for gamemd.exe. You may need to rename your executable back to gamemd.exe or find a cracked gamemd.exe that matches the 1.001 signature.
  2. Compatibility Mode: Set gamemd.exe and the trainer to run in Windows 7 or Windows XP (SP3) compatibility mode. Right-click > Properties > Compatibility.
  3. Renderers: The trainer might fail if you are using an aggressive GPU renderer (like TS-DDraw or CnC-DDraw). Try switching the game back to Renderer=GDI (no, not the faction—the Graphic Device Interface) in RA2.ini.

Antivirus: Many antivirus programs flag trainers as "false positives." You may need to add an exception for the trainer folder. Red Alert 2 and Yuri's Revenge - FearLess Cheat Engine

Veteran Status: Automatically promotes new units to elite status, granting them better range, health, and firepower.

Here are some general tips on using trainers with games: